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General control line discussion => Open Forum => Topic started by: Robert Zambelli on July 23, 2014, 06:52:01 PM

Title: Test flight on the TRIPLE!
Post by: Robert Zambelli on July 23, 2014, 06:52:01 PM: A few years back, I built a three-engine experimental stunt plane. Just out of curiosity, nothing else.
I flew it back then, had some issues. Corrected the problems but lost interest.

Anyhow, I did a flight last week just to see how it flew and what trim it might need.
Turn outs, it's a bit nose heavy but it didn't do too badly.
I'm not all that pleased with the three Surpass 26s - very inconsistent.
Three SAITO 30s will be in place soon.

For your entertainment: https://www.youtube.com/watch?v=gZG35VGjBY0&feature=youtu.be

Bob Z.
Title: Re: Test flight on the TRIPLE!
Post by: Tim Wescott on July 23, 2014, 06:59:38 PM: It sounds neat, though.
Title: Re: Test flight on the TRIPLE!
Post by: RC Storick on July 23, 2014, 07:07:28 PM: all you need to do is put in the share number like this.

http://youtu.be/gZG35VGjBY0
Title: Re: Test flight on the TRIPLE!
Post by: Paul Taylor on July 23, 2014, 07:15:41 PM: Neat Bob.

Think I remember Windy talking about this on one of his videos. H^^
Title: Re: Test flight on the TRIPLE!
Post by: KenP51 on July 23, 2014, 07:40:49 PM: Love the sound awsome

Ken
Title: Re: Test flight on the TRIPLE!
Post by: Shug Emery on July 23, 2014, 11:21:20 PM: That is a right goodie there. Love to feel the pull of that plane. And yes, the sound was incredible.
Shug
Title: Re: Test flight on the TRIPLE!
Post by: John Stiles on July 24, 2014, 05:38:41 AM: How long were those lines, and how much weight transfer did it feel like? Thanks, Greatly enjoyed that! H^^
Title: Re: Test flight on the TRIPLE!
Post by: Robert Zambelli on July 24, 2014, 09:40:58 AM: Hi, Guys - thanks for the compliments.

The lines, plane and handle measure out to 69 1/2 feet, fuselage to handle center line.
The pull is actually not that bad - no more than a Cardinal or Strega.

As soon as practical, I will install three SAITO 30s as I prefer them to the Surpass engines.
Also, I designed the plane such that it can easily convert to a taildragger. That should shift the CG back a bit since since it is noseheavy.
The dry weight, by the way, is just over 80 ounces.

As of right now, it has half-span flaps. In about five minutes, I can convert to full-span.

Bob Z.

Robert - how to I accomplish the "share" feature?
Title: Re: Test flight on the TRIPLE!
Post by: john e. holliday on July 24, 2014, 10:09:55 AM: I forgot all about this design of yours. Looks great in the air. Have no sound but I bet those 4 strokes sound great. Took you advice on the Cardinette. First flight in Topeka with shorter lines was a great improvement. Had needle a little lean and it got light at top of circle. Moved lead outs forward about a 1/4 inch and opened the needle. I could grow to love this little plane as I did most of the pattern on the 4th flight. Still getting used to how much fuel to inject on that little 4 stroke.
Title: Re: Test flight on the TRIPLE!
Post by: peabody on July 24, 2014, 10:50:02 AM: Bob....Isn't the plane in the video a test bed for the biplane canard pusher that you are building?
Title: Re: Test flight on the TRIPLE!
Post by: Steve Helmick on July 24, 2014, 11:10:03 AM: Do the engines have individual tanks, or a common tank for all three? Are the engines setup with venturii or stock carbs? ??? Steve
Title: Re: Test flight on the TRIPLE!
Post by: John Stiles on July 24, 2014, 04:00:42 PM: Quote from: Robert Zambelli on July 24, 2014, 09:40:58 AM
Hi, Guys - thanks for the compliments.

The lines, plane and handle measure out to 69 1/2 feet, fuselage to handle center line.
The pull is actually not that bad - no more than a Cardinal or Strega.

As soon as practical, I will install three SAITO 30s as I prefer them to the Surpass engines.
Also, I designed the plane such that it can easily convert to a taildragger. That should shift the CG back a bit since since it is noseheavy.
The dry weight, by the way, is just over 80 ounces.

As of right now, it has half-span flaps. In about five minutes, I can convert to full-span.

Bob Z.

Robert - how to I accomplish the "share" feature?
Thanks for the info,

I think this is the button you're refering to?
Title: Re: Test flight on the TRIPLE!
Post by: Elwyn Aud on July 25, 2014, 06:33:16 PM: Brodaks 2009
Title: Re: Test flight on the TRIPLE!
Post by: John Stiles on July 26, 2014, 12:36:13 PM: Good pix Elwyn! H^^ Sent ya a PM ;)
Title: Re: Test flight on the TRIPLE!
Post by: Robert Zambelli on July 28, 2014, 09:37:41 PM: Quote from: Steve Helmick on July 24, 2014, 11:10:03 AM
Do the engines have individual tanks, or a common tank for all three? Are the engines setup with venturi or stock carbs? ??? Steve

Hi, Steve.
The plane has three separate tanks, which I top off just before launch.
Stock carbs, sealed and wired wide open.
Unfortunately, the Surpass engines are quite temperamental. When spot on, they're great (remember, the 80+ ounce plane flew with one engine!) but, as previously stated, they're not consistant. I've experienced similar problems with other Surpass engine, particularly the 40. One day, while getting ready to fly, the crankpin broke. I believe the 40 has been discontinued - could that be the reason?

Bob Z.
Title: Re: Test flight on the TRIPLE!
Post by: RknRusty on July 28, 2014, 10:02:14 PM: I was the shaky cameraman on that flight. The long lines surprised me so I cut and ran out into the sand pit after the first low pass. It sounded like a full size plane flying over my head. It was sure fun to watch.
Rusty
Title: Re: Test flight on the TRIPLE!
Post by: John Stiles on July 29, 2014, 09:16:25 AM: Quote from: RknRusty on July 28, 2014, 10:02:14 PM
It sounded like a full size plane flying over my head. It was sure fun to watch.
Rusty
speaking of that sound, listen to the sound of this Fox .35 in slo-mo: http://youtu.be/_idJ8YCA-sw ;D
Title: Re: Test flight on the TRIPLE!
Post by: proparc on August 04, 2014, 10:34:29 AM: Bob Zambelli-all these fun and games has got to stop! You have to buckle down and start suffering like the rest of us. Long sessions of difficult practice-hour after hour of buffing and polishing your ship. Long sessions figuring out control system algorythms.

Again-too much fun. mw~

By the way what line length were you using,not that I am condoning this fun stuff mind you!!
Title: Re: Test flight on the TRIPLE!
Post by: john e. holliday on August 05, 2014, 09:10:14 AM: Keep having fun Bob as I need to get off my backside and start flying more.
Title: Re: Test flight on the TRIPLE!
Post by: Robert Zambelli on August 05, 2014, 10:30:28 AM: Doc: The lines, plane and handle measure out to 69 1/2 feet, fuselage to handle center line.
Bob Z.
Title: Re: Test flight on the TRIPLE!
Post by: proparc on August 05, 2014, 02:25:51 PM: Quote from: Robert Zambelli on August 05, 2014, 10:30:28 AM
Doc: The lines, plane and handle measure out to 69 1/2 feet, fuselage to handle center line.
Bob Z.

Thanks
Of course Bob knows I am joking, as I am a 4 stroke fan and his ship has 3 of them!!
Title: Re: Test flight on the TRIPLE!
Post by: Dennis Holler on August 06, 2014, 08:39:31 PM: That's really neat and I love the sound!! H^^
Title: Re: Test flight on the TRIPLE!
Post by: RknRusty on August 06, 2014, 10:53:32 PM: Quote from: Dennis Holler on August 06, 2014, 08:39:31 PM
That's really neat and I love the sound!! H^^
I hear Bob has lots of planes that will amaze us and amuse us. I look forward to getting him to come visit our field again, maybe join our club. I enjoyed seeing his famous Stunt Rocket fly that day too. Next time I'll be on the lookout for long lines when I man the camera. Lol That made it kinda funny though.
Here's a pic from that excursion.
Me with the Yak-9, Wayne Robinson, Tom Beatie, and Bob Zambelli.
(http://i166.photobucket.com/albums/u116/rknrusty/Airplanes/SAM_2698_zps9ccd3a53.jpg)
Rusty